Quote:
Originally Posted by cjperformance
I would recommend starting by blending and scanning. Watch low side and high side psi, and inj PW. My limit with LT4 high side and dsx aux is around 50 to 60% eth. With trans tune (increased shift rpm and consequently the max boost), and pushing 9.5 psi in cool weather, its around 5.5 to 5.9 ms inj pw.
My guess based on what I've observed with engine airflow lbs/min you'll see 100 hp difference at the engine between 5 psi and 7 psi.
Im close to ideal timing with 50% blend, no need for 85%.
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Ok thanks for the info!! Very informative post you started on your findings. I do have the tcm tuned. So your findings are with you running 9.5psi? I have the 3.9” pulley on mine, spec’d for 7psi at 6500 rpm from PC. Rick Clarke is who tuned it FBO, he said once the PC is on it will be close to e70 blend and may have to trim shift points back etc. I’m not opposed to dropping psi down to 5psi either. Was told by dropping psi we can add more timing etc and be able to handle pump e85. I’m just trying to learn as much as I can about it. I’m not stuck on a number but just want to utilize e85, maybe I’m looking at it all wrong idk ??
Thanks again for the help guys!